公开(公告)号：US20160024913A1

公开(公告)日：2016-01-28

申请号：US14775477

申请日：2014-03-10

Applicant: XACT DOWNHOLE TELEMETRY INC.

Inventor： Paul Camwell ,  Douglas S. Drumheller

IPC: E21B47/16

CPC classification number: E21B47/16 ,  E21B47/18 ,  E21B47/182 ,  G01V1/523 ,  G01V11/002 ,  G10K11/16

Abstract: An acoustic receiver for use on a drill string includes a housing attachable to the drill string; a first sensor mounted within the housing for measuring a first parameter at a first location on the drill string and for generating a first parameter signal representative of the first parameter; a second sensor mounted within the housing for measuring a second parameter at a second location on the drill string and for generating a second parameter signal representative of the second parameter; and a controller mounted within the housing and communicatively coupled to the first and second sensors. The magnitudes of the first and second parameters vary in proportion to magnitude of the acoustic wave and the first and second parameters have a quadrature phase relationship. The controller is configured to combine the first and second parameter signals to determine the magnitude of the acoustic wave.

Abstract translation: 用于钻柱的声学接收器包括可附接到钻柱的壳体; 安装在所述壳体内的第一传感器，用于测量所述钻柱上的第一位置处的第一参数并且用于生成表示所述第一参数的第一参数信号; 安装在所述壳体内的第二传感器，用于测量所述钻柱上的第二位置处的第二参数，并用于产生表示所述第二参数的第二参数信号; 以及控制器，其安装在所述壳体内并且通信地耦合到所述第一和第二传感器。 第一和第二参数的大小与声波的幅度成比例地变化，并且第一和第二参数具有正交相位关系。 控制器被配置为组合第一和第二参数信号以确定声波的幅度。

公开(公告)号：US20160017704A1

公开(公告)日：2016-01-21

申请号：US14771777

申请日：2014-02-28

Applicant: XACT Downhole Telemetry Inc.

Inventor： Paul Camwell ,  Michael Reeves

IPC: E21B47/09 ,  G01V5/04 ,  E21B33/12

CPC classification number: E21B47/09 ,  E21B33/12 ,  E21B47/044 ,  G01V5/045

Abstract: A method for detecting a downhole position in a wellbore comprises: providing a set of signal emitters, each signal emitter in the set attached to a different position in the wellbore and each signal emitter configured to emit a signal having a unique characteristic; and providing a measurement tool comprising a signal detector configured to detect the different signals and a rotation device configured to rotatably contact a wall of the wellbore. The measurement tool is moved through the wellbore and one or more positions of the measurement tool in the wellbore is determined by detecting one or more of the signals and identifying the position of one or more of the signal emitters by the unique characteristic of each detected signal, and by detecting the number of rotations in a ranging wheel of the rotation detector that contacts the wellbore.

Abstract translation: 一种用于检测井眼中的井下位置的方法，包括：提供一组信号发射器，该组中的每个信号发射器附接到井眼中的不同位置，并且每个信号发射器被配置为发射具有独特特征的信号; 以及提供测量工具，其包括被配置为检测不同信号的信号检测器和被配置为可旋转地接触井眼的壁的旋转装置。 通过检测一个或多个信号并且通过每个检测信号的唯一特性来识别一个或多个信号发射器的位置来确定测量工具通过井眼移动并且测量工具在井眼中的一个或多个位置 并且通过检测与井眼接触的旋转检测器的测距轮中的旋转数。